From Seiko, the Men's Seiko 5 Sports Automatic Stainless Steel Bracelet Watch features:  Stainless steel case and bracelet Link/clasp closure LumiBrite hands and markers Unidirectional rotating bezel Day/date calendar 24 jewels Approx. 21,600 vibrations per hour Power reserve approx. 41 hours Manual and automatic winding capabilities Case diameter approx. 42.5mm Water-resistant to 10 bar, 100 meters (300 feet) Imported.